Property, Plant and Equipment - Components of property, plant and equipment (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment
Total cost	$ 715.9	$ 722.9
Less accumulated depreciation	(427.0)	(419.2)
Property, plant and equipment-net	288.9	303.7
Land
Property, Plant and Equipment
Total cost	24.1	25.4
Building and Improvements
Property, Plant and Equipment
Total cost	195.3	196.4
Machinery, Equipment and Tooling
Property, Plant and Equipment
Total cost	269.4	263.6
Furniture and Fixtures
Property, Plant and Equipment
Total cost	16.4	15.6
Computer Hardware and Software
Property, Plant and Equipment
Total cost	117.1	114.4
Rental Cranes
Property, Plant and Equipment
Total cost	84.0	90.2
Property, plant and equipment-net	49.4	54.3
Construction in Progress
Property, Plant and Equipment
Total cost	$ 9.6	$ 17.3

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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